Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
  • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
  • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
  • B03C3/02—Plant or installations having external electricity supply
  • B03C3/16—Plant or installations having external electricity supply wet type
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
  • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
  • F24F8/117—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using wet filtering
  • F24F8/133—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using wet filtering by direct contact with liquid, e.g. with sprayed liquid
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
  • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
  • F24F8/192—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
  • F24F8/194—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages by filtering using high voltage
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
  • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
  • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

• the invention relates to a device for purification of air, especially for purification of indoor air.
• EP 424 335 relates to a procedure and a device for the purification of air, flue gases and the like, where the purification is performed in a shaft, duct or a pipe containing electrodes. There is a potential difference between the electrodes and the wall(s) in the shaft/duct/pipe. The electrodes ionise impurity particles in the air/flue gases and these are then attracted to the walls to which they become attached. The walls are cleaned of impurities by flushing them with water at regular intervals.
• Another disadvantage of existing air purification devices is that the impurities accumulate in the devices and have to be removed manually when the amount of accumulated impurities has become too great.
• the object of the invention is to provide a device for purification of indoor air, which is effective for several types of impurities, which does not involve any risk and where the impurities are finally removed from the environment that has to be purified.
• the device according to the invention comprises a drip chamber, which is adapted for connection to the ordinary water mains, a metal plate, a nozzle that is connected to the drip chamber and disposed above the metal plate and a collecting vessel.
• the object of the drip chamber is to convert the continuous flow of water from the mains to discrete drops, thus forming a water reservoir in the bottom of the drip chamber, which is electrically insulated from the water supply while the reservoir still receives a constant new supply of water.
• the water from the reservoir is passed on to the nozzle and sprayed over the steel plate.
• the device may also be equipped with a device, which comprises a metallic cylinder and a fan.
• the fan is disposed at one end of the cylinder, while the other end of the cylinder is closed. The fan blows air into the cylinder, thus producing an overpressure in the cylinder.
• Use is preferably made of a centrifugal fan, which requires a certain amount of air circulation in order to function. In this case the cylinder will therefore be equipped with a hole at the opposite end. Impurities will become attached to the outside of the cylinder.
• the device may also comprise current conducting coils, which are wound round it.
• the coils are wound in such a manner that the electric fields generated round these coils when current passes through them form a common electric field.
• the device's other units are placed in the centre of this field.
• Figure 1 illustrates the drip chamber.
• Figure 2 illustrates the metal plate and nozzle.
• Figure 3 illustrates the electrical connections for a metal plate in the device according to the invention.
• Figure 4 illustrates a metallic cylinder with a fan that creates overpressure in the cylinder.
• FIG. 5 illustrates a preferred orientation of current conducting coils.
• the device comprises a supply pipe 21 for connecting to the water mains. Water from the ordinary mains will thereby flow into the drip chamber 20.
• the device further comprises a spreader 22, which is connected in the drip chamber 20 and which converts the continuous flow of water into discrete drops 26, which drip down into the bottom of the drip chamber 20.
• the spreader 22 works by the water running down an umbrella-like unit where the outer edge of the "umbrella" has a row of points 27. The flow of water is small enough to permit the water to be passed towards the points 27 and drip off them.
• the bottom of the drip chamber is designed in such a manner that the water is collected and forms a water reservoir 23.
• the water in the water reservoir 23 is therefore electrically insulated from the water in the supply pipe 21.
• the drip chamber is airtight, thus causing a small overpressure to build up there when the water flows in through the supply pipe 21 and the spreader 22.
• the drip chamber 20 also comprises an overpressure valve 25.
• the water from the water reservoir then continues through the drainpipe 24 into a nozzle 30 in figure 2.
• the nozzle 30 delivers a spray of water on to a metal plate 31, with the result that the area round the nozzle and the adjacent area of the metal plate are surrounded by a mist-like cloud of water.
• the metal in the plate 31 is preferably stainless steel or another non-corrosive metal.
• the nozzle 30 and/or the metal plate 33 are provided with electrical connections 33 for impressing a voltage.
• the water which is thereby also under voltage, will attract electrically charged molecules/particles and hold on to them.
• the metal plate 31 is tilted, with the result that the water runs over the plate and down into a collecting vessel, which is not illustrated.
• the collecting vessel has an emptying function with a level switch, thus causing the water to be emptied out when a certain amount of water has collected.
• Figure 3 illustrates how the metal plate 31 or nozzle 30 is electrically insulated from the environment, but electrically connected to a rectifying bridge 12.
• the rectifying bridge 12 is electrically connected to a transformer 13 for stepping-down an alternating voltage of 220V from the ordinary power grid to an alternating voltage of 45V.
• the rectifying bridge is earthed via a switch 14 (to the chassis). With this configuration the potential difference between the metal plate 31 and earth 11 can be altered by connecting and disconnecting the switch.
• the device also comprises a metallic cylinder 40, which has a fan 41, preferably a centrifugal fan, at one end and a restriction 42, which restricts the airflow, at the other end.
• Other types of fan may also be used, e.g. a type that does not require air circulation, in which case the opposite end of the pipe may be completely closed.
• the cylinder will attract molecules, thereby increasing the efficiency of the device according to the invention.
• the device according to the invention may comprise coils 51 and 52 in figure 5, wound by electrical conductors and connected in series to the heating element 20 in figure 2.
• the electric fields generated round the coils create a total electric field.
• the coils are preferably wound round the apparatus in such a manner that the location of the centre in this total electric field coincides with the location of the other units of the apparatus.
• the device may comprise an air humidifier of a known per se type for increasing the humidity of the air surrounding the apparatus.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Electrostatic Separation (AREA)
• Air Humidification (AREA)
• Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
• Separation Of Particles Using Liquids (AREA)

Priority Applications (9)

Applications Claiming Priority (2)

Publications (1)

Family

ID=19912620

Family Applications (1)

Country Status (12)

Families Citing this family (6)

Citations (4)

Family Cites Families (12)

• 2001
  • 2001-06-28 NO NO20013251A patent/NO315153B1/no not_active IP Right Cessation
• 2002
  • 2002-06-27 CA CA002451046A patent/CA2451046C/en not_active Expired - Fee Related
  • 2002-06-27 PL PL02373615A patent/PL373615A1/xx not_active IP Right Cessation
  • 2002-06-27 IL IL15948702A patent/IL159487A0/xx unknown
  • 2002-06-27 EP EP02747775A patent/EP1404452B1/en not_active Expired - Lifetime
  • 2002-06-27 US US10/495,769 patent/US7427313B2/en not_active Expired - Lifetime
  • 2002-06-27 DK DK02747775.1T patent/DK1404452T3/da active
  • 2002-06-27 HU HU0400912A patent/HUP0400912A2/hu unknown
  • 2002-06-27 NZ NZ530596A patent/NZ530596A/en unknown
  • 2002-06-27 WO PCT/NO2002/000237 patent/WO2003002262A1/en active Application Filing
  • 2002-06-27 MX MXPA03011897A patent/MXPA03011897A/es unknown
  • 2002-06-27 JP JP2003508487A patent/JP4447314B2/ja not_active Expired - Lifetime

Patent Citations (4)

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